Batman: Arkham Asylum is almost upon us, so publishers Warner Bros. have stepped up their love affair with all things PlayStation with the announcement of a special, Bat-themed tie-in with PlayStation Home.

Anyone purchasing the game on PS3 will be given a free unlock for PlayStation Home, giving them the option of decking out their apartment to look like the Batcave. And not Dark Knight's "office space" batcave, either, a proper, dingy batcave.

The game's out on PS3 on August 25, with the batcave unlockable as quickly as you can get your copy home and download it.